Performing magician Scott Xavier, among his other great paranormal routines, has a routine called the Wo-Chen Magic Square. It can be seen on his promotional page (RealPlayer) as well as his MySpace page.

This video is a great example of taking something and making it your own. Note, for example, that Scott takes a vastly different approach than Jon Stetson, yet they both get a great reaction.

Video Formats:
MySpace
RealPlayer